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Icom ICR7000 mods
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ICR7000
MODIFY YOUR ICOM R7000 TO SCAN AND SEARCH FASTER
Bob Parnass, AJ9S
This article describes how to increase the scan an
search speeds of the ICOM R7000 receiver by 60% without
noticeable performance degradation.
Background
The front panel SCAN SPEED control on the R7000
receiver allows the user to adjust the speed of scan-
ning and searching operations, as well as the rate at
which the priority channel is sampled. Rotating the
control counterclockwise decreases the speed, and rota-
ting it clockwise increases the speed.
When the SCAN SPEED control on my R7000 (serial number
001400) was turned fully clockwise, the radio would
scan a maximum of about 8 channels/second, or search
about 8 increments/second. As the following table
shows, the stock R7000 can scan about as fast as a
Radio Shack PRO-30 or PRO-2003.
TABLE 1. Maximum Scan Rates of Selected Receivers
_____________________________________________________
[ Scanner Maximum Scan Rate[
[ [ (channels/second)[
[________________________________[___________________[
[ Kenwood TR-2600 [ 1.2 [
[ Radio Shack PRO-30 [ 8 [
[ Radio Shack PRO-2003 [ 8 [
[ ICOM R7000 (stock) [ 8 [
[ ICOM R7000 (after modification)[ 13 [
[ Regency M400 [ 13 [
[ Bearcat 20/20 [ 15 [
[ Bearcat 300 [ 15 [
[________________________________[___________________[
CONTINUED IN FILE ICR7000.3
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